package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishMapper;
import com.sky.mapper.FavorMapper;
import com.sky.mapper.SetMealDishMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.awt.datatransfer.FlavorListener;
import java.util.ArrayList;
import java.util.List;

@Service
public class DishServiceImpl implements DishService {
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private FavorMapper favorMapper;
    @Autowired
    private SetMealDishMapper setMealDishMapper;
    @Override
    @Transactional
    public void addDishFavor(DishDTO dishDTO) {
        Dish dish=new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.addDish(dish);
        Long dishId = dish.getId();
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if(flavors!=null &&flavors.size()>0){
            flavors.forEach(dishFlavor -> {
                dishFlavor.setDishId(dishId);
            });
            favorMapper.addBatchFavor(flavors);
        }

    }

    @Override
    public PageResult pageQuery(DishPageQueryDTO dishDTO) {
        PageHelper.startPage(dishDTO.getPage(),dishDTO.getPageSize());
        Page<DishVO> result=dishMapper.pageQuery(dishDTO);
        return new PageResult(result.getTotal(), result.getResult());
    }
    @Transactional
    @Override
    public void deletebyids(List<Long> ids) {
        for (Long  id: ids) {
            Dish dish=dishMapper.getbyid(id);
            Integer status = dish.getStatus();
            if(status== StatusConstant.ENABLE){
                throw new DeletionNotAllowedException(MessageConstant.SETMEAL_ON_SALE);
            }
        };
        List<Long> dishByDishId = setMealDishMapper.getDishByDishId(ids);
        if(dishByDishId!=null && dishByDishId.size()>0){
            throw  new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
        }
//        for (Long id:ids) {
//            dishMapper.deletebyid(id);
//            favorMapper.deletebydishid(id);
//        }
        dishMapper.deletebyids(ids);
        favorMapper.deletebydishids(ids);

    }

    @Override
    public DishVO getbyid(Long id) {
        Dish dish = dishMapper.getbyid(id);
        List<DishFlavor> flavors=favorMapper.getbydishid(id);
        DishVO dishVO=new DishVO();
        BeanUtils.copyProperties(dish,dishVO);
        dishVO.setFlavors(flavors);
        return dishVO;
    }

    @Override
    public void updatewithflavor(DishDTO dishDTO) {
        Dish dish=new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.update(dish);
        favorMapper.deletebydishid(dishDTO.getId());
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if(flavors!=null && flavors.size()>0){
            flavors.forEach(dishFlavor -> {
                dishFlavor.setDishId(dishDTO.getId());
            });
            favorMapper.addBatchFavor(flavors);
        }
    }

    @Override
    public void status(Integer status,Long id) {
        dishMapper.status(status,id);
    }
    /**
     * 根据分类id查询菜品
     * @param categoryId
     * @return
     */
    public List<Dish> list(Long categoryId) {
        Dish dish = Dish.builder()
                .categoryId(categoryId)
                .status(StatusConstant.ENABLE)
                .build();
        return dishMapper.list(dish);
    }
    /**
     * 条件查询菜品和口味
     * @param dish
     * @return
     */
    public List<DishVO> listWithFlavor(Dish dish) {
        List<Dish> dishList = dishMapper.list(dish);

        List<DishVO> dishVOList = new ArrayList<>();

        for (Dish d : dishList) {
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(d,dishVO);

            //根据菜品id查询对应的口味
            List<DishFlavor> flavors = favorMapper.getbydishid(d.getId());

            dishVO.setFlavors(flavors);
            dishVOList.add(dishVO);
        }

        return dishVOList;
    }
}
